package String;

public class MatchesDemo {
    public static void main(String[] args) {
        /*
         邮箱正则表达式：
         [a-zA-Z0-9_]+@[a-zA-Z0-9]+(\.[a-zA-Z]+)+
         */
        String emil = "wangqq@qq.com";
        String regex = "[a-zA-Z0-9_]+@[a-zA-Z0-9]+(\\.[a-zA-Z]+)+";
        boolean match = emil.matches(regex);
        if (match){
            System.out.println("是正确的邮箱格式");
        }else{
            System.out.println("不是正确的邮箱格式");
        }

    }
}
